I’ve deposited an amount of BTC to sealswithclubs.eu but nothing shows up in the account. I’ve checked in bitcoin explorer and everything looks good on my side, and the money put in to the address has gone out again (http://blockexplorer.com/a/39ybYYmZC1). I’ve also tried ones more with a smaller amount (different address), and sent them a mail about this but nothing.

Is this site a scam? If others have experienced this a warning should be put out.

Hi
Is there a pre built version for windows? Ready to go? I would like to do some quick testing moneychanger i think it's called with out installing everything

After some brute force reverse engineering I figured it out First off its sha256(sha256 and then the hex string is used in reverse.

Not meant to be easy this hehe

Ok I'm still working on this, even after all your help I've figured out that to hash the transaction you actually do a sha256(sha256(tx)), the was my first problem.
Now the problem is:

I'm looking at the merkle root in http://blockexplorer.com/rawblock/000000000000030de89e7729d5785c4730839b6e16ea9fb686a54818d3860a8d

Taking the last three hashes you should think that:
sha256(e2d23adf5c86b1266a6abb9a471eaa05bf233dc66245e36a82bb14392fb36c4713f0f97659ccb96 f0f6abd4cda25894463dec0cf3deb626acfc60d506bfd3650) = acb5aeb11e2a607e610b90f2722cf68aec719af2a2fd6a6af179764e90169af4

But no, I cant get this to work. Am i missing something again??

PS I am converting from hex to byte[]

Thanks, nice illustration. I think I've got it more or less working. Only struggling with the endians.

Should i be able to make the merkel root I'm making now match the one i get from "getwork"??

 

Is this really as simple as:
* Get transactions with getmemorypool, gives:
   "blabla" = tx1
   "blabla" = tx2
   "blabla" = tx3
   "blabla" = tx4
   and so on

* Do A = sha256(tx1 | tx2), B = sha256(tx3 | tx4)
* do sha256(A | B) = merkel root

Am I on to something???

Perfect answer, thanks

Hi

I've been trying to understand more about how bitcoin works. But I can't find much information on how the merkel root is calculated. I understand it's a coinbase script and the transactions from this block, but not much more. Any one know of some place I can read up on this.

Ok i found the answer, for you who are interested:
The pool sends a different header to every miner, then the miner goes trough the nonce.

OK so next question:
I've looked at the data returned from the miner to the pool. Looks like its the header again with the nonce that worked (the golden one), but also the merkle root changes. What is this all about???

I know the answer is out there but I can’t find it.
As I understand it, when you do mining you send a getwork(), get data back and do a sha256(sha256()) of the first 80 bytes (of the data part). If it’s not below the target you increase the nonce and try again. Everyone is not working on the same thing since merkle root is different for everyone.

My question is for mining pools, I guess everyone gets the same data from GetWrok(). How is it then coordinated so that they all don’t just tests the same hashes??

Ok thanks, and relax I'm not suggesting I'm just asking if this safeguard exists.

Yes I understand this, but there is no safeguard?? Like Putting the coins back in to the community when they have been unused for lets say 2 years.

There are a finite amount of bitcoins, so what happens when someone "loses" there coins. I mean due to hard drive failure and so on. This is not often but over time this means coins are lost for ever??

I’ve actually gotten security warnings twice from Symantec on cgMiner.exe now. So apparently cgminer is being used form something malicious out there.

Cant you just direct the --merged-url at a namecoin pool?

Thanks 3 shares and counting

Wohoo got my first share Took me a good 2.5h but still. Now I just have one last question, how do you do merged mining with say namecoin? I guess you start namecoind and then what

More than one answer to all my questions hehe thanks